richard kretz...industries using leistritz twin screws extruders • look on a thermoplastic...

Richard Kretz www.leistritz.com

↗ 1905 established as „Maschinenfabrik Paul Leistritz“

↗ Privately owned, independent company

↗ Employees ~ 1,900

↗ Sales p.a. ~ 265 Mio. EUR

↗ R & D~ 3.3%

↗ Export~ 64%

↗ Investment~ 5%

Corotation Twin Screw Extruders (TSE)

Today topics

• Industries using Leistritz Twin Screws Extruders• Main parameters for twin screw extrusion• A new generation of Leistritz extruders :

ZSE35iMAXX• Leistritz novelties for twin screw extrusion• Smart Glasses Service

Today topics

• Industries using Leistritz Twin Screws Extruders

Industries using Leistritz Twin Screws Extruders

• Look on a thermoplastic product. In 95% cases a twin screw extruder was used into its conversion cycle.

• Most often an extrusion with a twin screw extruder results to a pellet form named compound or masterbatch.

• Or sometime the final product is realized directly by compounding without pelletizing step ‐> direct extrusion

11.01.2018www.leistritz.com

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• Polymer • Compounding• Masterbatch• Direct Extrusion• Recycling• Pharmaceutical • Cosmetic• Food• R&D


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• Adhesives – Hot melt• Rubber • Chemical reactions• Polymerization• Ceramic • Metal Injection Molding• ….

HDPELLDPEPP

© Linde

Polymer Industry

TWIN SCREW EXTRUSION


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Polymérisation

Anti oxydant, UV, Thermal Stabilizers

CommercializedPolymers

Polymer Industry


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Polymers

Additives, Charges, Reinforced, Masterbatch

Compound

Compounding


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Masterbatch


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Polymers

Pigments organicsor inorganics, additives

Masterbatch

Masterbatch line


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Direct extrusion


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Polymères or Compounds

Masterbatch, additives, …

Films, Layersor pipes

©Example of a PET muilitlayer film line

Direct extrusion


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End life plastics

Additives, Charges, Renforts, Mélanges

Maîtres

RecycledCompound

Recycling

Pharmaceutical, Cosmetics & Food Extrusion


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Research & Development

• Test new formulations • New raw material validation for your application• Scale‐up

Leistritz Lab extruders type ZSE18Maxx & ZSE27iMaxx are the state of the art :• High flexibility and easy handling• Same conception as a production line• Volume & Torque performance like in production

Innovation is the key to stay competitive

Research & Development

Today topics

• Applications with Leistritz twin screws extruders• Main parameters for twin screw extrusion


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Main parameters for twin screw extrusion for selection

• OD/ID ratio ‐> 1.4 to 1.8• Specific Torque ‐> 8 to 18 Nm/cm3• L/D length ‐> 24 to 100 • Screw profile ‐> multitude


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Main parameters for twin screw extrusion for processing


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• Formula, raw materials quality and shapes are also important success factors.• Auxiliary equipment will have an impact too (accuracy, régularity, performance)

Main parameters for twin screw extrusion for processing

Input:

Screw profile Throughput Barrel heating Screw speed

Output:

Torque Melt pressure Melt temperature Product quality Specific Energy

Main parameters for twin screw extrusion

Main feed portdégasage

Pressurebuild up

Mixing

Gravimetricfeeder #2

Pression (bar)

Side feedercharges/powders

Mixingdiscs

Polymer incorporation

Different pressures into the process

Atm degasing

Main parameters for twin screw extrusion

Gravimetricfeeder #1

Vac degasing

Mixingsealing

Today topics


ZSE35iMAXX

ZSE35iMAXX

Today topics


ZSE35iMAXX• Leistritz novelties for twin screw extrusion

OD/ID ratio & high Torque

Torque Measurement Option

at sleeve coupling to get a value per screw shaft

New Side feeders

• OD/ID ratio : 2• Easy handling • Shafts cooled by water (option)• Different steel quality of screws

and barrel according to applications

• Screws could be segmented

Elongational Rheometer

Inline for system production 4.0


unique elongational die

• Based on Cogswell´s assumptions

• Elongation rate: constant for hyperbolic die:

E

measured shear elong. elast.

p

p p p p

measured shearelong.

E p pp

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2

2 2m mShear

m

m Vpx W x H x

E elong. elast.p p p

2 2 1 1

1 1VL H W H W


Valid tool for online quality control in compounding

Example of application :• Material degradation• Blending performance• Controlling viscosity/MFR during compounding• Fillers distribution into a polymer

Today topics


ZSE35iMAXX• Leistritz novelties for twin screw extrusion• Smart Glasses Service

Each machine / line is equipped by default with a remote servicetool (VPN security router) via an absolutely safe VPN tunnel.

www.leistritz.com

REMOTE SERVICEINDUSTRY 4.0

Leistritz remote service central↗ Access to live machine data via VPN↗ Access to live pictures via Smart Glasses↗ Access tablet via Remote Desktop

connectionInternet↗ Only outbound connection↗ Via company network or mobile

network

Smart glassesINDUSTRY 4.0

www.leistritz.com

• Turnkey installations at high level of engineering• A lot of know‐how & competences in different fields• Good connections with R&D labs & Universities• 3 Development Centers worldwide• Efficient service team • 7 different trainings offered• Always improving the future with innovations

Conclusion: Leistritz the right partner

Richard Kretz www.leistritz.com

richard kretz...industries using leistritz twin screws extruders • look on a thermoplastic...

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